[INFO] fetching crate scallop 0.0.12...
[INFO] checking scallop-0.0.12 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate scallop 0.0.12 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate scallop 0.0.12 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scallop 0.0.12
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate scallop 0.0.12
[INFO] tweaked toml for crates.io crate scallop 0.0.12 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate scallop 0.0.12 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tempfile v3.8.1
[INFO] [stderr]   Downloaded clang-sys v1.6.1
[INFO] [stderr]   Downloaded autotools v0.2.6
[INFO] [stderr]   Downloaded prettyplease v0.2.15
[INFO] [stderr]   Downloaded shlex v1.2.0
[INFO] [stderr]   Downloaded ipc-channel v0.18.0
[INFO] [stderr]   Downloaded bindgen v0.69.1
[INFO] [stderr]   Downloaded ctor v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b2ad5070fcf9b7e846474b07804932d498b1426967723fc2da6e517f5fc6022
[INFO] running `Command { std: "docker" "start" "-a" "6b2ad5070fcf9b7e846474b07804932d498b1426967723fc2da6e517f5fc6022", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b2ad5070fcf9b7e846474b07804932d498b1426967723fc2da6e517f5fc6022", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b2ad5070fcf9b7e846474b07804932d498b1426967723fc2da6e517f5fc6022", kill_on_drop: false }`
[INFO] [stdout] 6b2ad5070fcf9b7e846474b07804932d498b1426967723fc2da6e517f5fc6022
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0dafc68347b0379c9046038b6ec1b4c50ceb5f704f994e6fd5b38bbcf8bc346
[INFO] running `Command { std: "docker" "start" "-a" "b0dafc68347b0379c9046038b6ec1b4c50ceb5f704f994e6fd5b38bbcf8bc346", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling clang-sys v1.6.1
[INFO] [stderr]    Compiling prettyplease v0.2.15
[INFO] [stderr]    Compiling rustix v0.38.21
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling linux-raw-sys v0.4.10
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling camino v1.1.6
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling bindgen v0.69.1
[INFO] [stderr]    Compiling home v0.5.5
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling serde v1.0.190
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling shlex v1.2.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling autotools v0.2.6
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]    Compiling thiserror v1.0.50
[INFO] [stderr]     Checking mio v0.8.9
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking uuid v1.5.0
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]     Checking tempfile v3.8.1
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]    Compiling serde_derive v1.0.190
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]    Compiling ctor v0.2.5
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]    Compiling scallop v0.0.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking ipc-channel v0.18.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 59s
[INFO] running `Command { std: "docker" "inspect" "b0dafc68347b0379c9046038b6ec1b4c50ceb5f704f994e6fd5b38bbcf8bc346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0dafc68347b0379c9046038b6ec1b4c50ceb5f704f994e6fd5b38bbcf8bc346", kill_on_drop: false }`
[INFO] [stdout] b0dafc68347b0379c9046038b6ec1b4c50ceb5f704f994e6fd5b38bbcf8bc346
[INFO] checking scallop-0.0.12 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate scallop 0.0.12 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate scallop 0.0.12 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scallop 0.0.12
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate scallop 0.0.12
[INFO] tweaked toml for crates.io crate scallop 0.0.12 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate scallop 0.0.12 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b767a4f1e7f4716804ced2d718174860015002c5bcfe5ec41ebf2907452fa1d
[INFO] running `Command { std: "docker" "start" "-a" "7b767a4f1e7f4716804ced2d718174860015002c5bcfe5ec41ebf2907452fa1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b767a4f1e7f4716804ced2d718174860015002c5bcfe5ec41ebf2907452fa1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b767a4f1e7f4716804ced2d718174860015002c5bcfe5ec41ebf2907452fa1d", kill_on_drop: false }`
[INFO] [stdout] 7b767a4f1e7f4716804ced2d718174860015002c5bcfe5ec41ebf2907452fa1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8c7d727f249c5c29cc85cd8cbc403fd5612fe0f7daf9f4dcf07d3098ee33af2
[INFO] running `Command { std: "docker" "start" "-a" "d8c7d727f249c5c29cc85cd8cbc403fd5612fe0f7daf9f4dcf07d3098ee33af2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling prettyplease v0.2.15
[INFO] [stderr]    Compiling rustix v0.38.21
[INFO] [stderr]    Compiling clang-sys v1.6.1
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling linux-raw-sys v0.4.10
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling home v0.5.5
[INFO] [stderr]    Compiling serde v1.0.190
[INFO] [stderr]    Compiling bindgen v0.69.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling camino v1.1.6
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling shlex v1.2.0
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling autotools v0.2.6
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]    Compiling thiserror v1.0.50
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]     Checking mio v0.8.9
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking uuid v1.5.0
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]     Checking tempfile v3.8.1
[INFO] [stderr]    Compiling serde_derive v1.0.190
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling ctor v0.2.5
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]    Compiling scallop v0.0.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking ipc-channel v0.18.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 13s
[INFO] running `Command { std: "docker" "inspect" "d8c7d727f249c5c29cc85cd8cbc403fd5612fe0f7daf9f4dcf07d3098ee33af2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8c7d727f249c5c29cc85cd8cbc403fd5612fe0f7daf9f4dcf07d3098ee33af2", kill_on_drop: false }`
[INFO] [stdout] d8c7d727f249c5c29cc85cd8cbc403fd5612fe0f7daf9f4dcf07d3098ee33af2